今晩

1. Origins, structure, and basic meaning

• Structure: 今晩 (こんばん) combines present 今 and evening 晩 to mean tonight.
• Basic usage: It locates a meal or a train journey in the evening or night of the current day.

2. Common pitfalls and similar expressions

• Anchored to the current day
  • 今晩 refers to the night belonging to today, not simply any evening already mentioned in a story.